假定英语课上老师要求同桌之间交换修改作文，请你修改你同桌写的以下作文。文中共有10处语言错误，每句中最多有两处。错误涉及一个单词的增加、删除或修改。
增加：在缺词处加一个漏字符号（∧），并在其下面写出该加的词。
删除：把多余的词用斜线（\）划掉。
修改：在错的词下划一横线，并在该词下面写出修改后的词。
注意：1．每处错误及其修改均仅限一词。
2．只允许修改10处，多者（从第11处起）不计分。
Mark Twain liked to play jokes in his friends．One day one of his friends lost his wallet and asked Mark pay the train fare for him．"But I haven't got enough money to pay both your fare or mine," Mark said．Then he adds, "We can get on the train first and when the conductor comes to check ticket, you hide under my seat．" Late, however, when the conductor came to check tickets, Mark gave him two more tickets．Then he said in the loud voice, "My friend is a strange man．When he travels on a train, he prefers to lying on the floor under the seat．" Of course many passengers laughed at his poorly friend．